cockroachdb / cockroachdb/cockroach
cdc: iterate over schema changes & expected backfills in tests
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A-cdc
C-enhancement
T-cdc
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Description
**Is your feature request related to a problem? Please describe.**
We manually went through a [list of schema changes](https://docs.google.com/spreadsheets/d/1z0NcQdXj7baQ4TjlI-56RYBEkB7g45FpoB_tkc9IVr8/edit#gid=0) [internal] to verify that the backfill behavior is expected. Overall, we saw what we expected.
Seems that this should be automated.
**Describe the solution you'd like**
A looped test that maps “schema change type” to “expected backfill”. Automate what was done manually above.
Jira issue: CRDB-29765
Epic CRDB-9179
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